Lantern



2 Sheets-shee t 1. G. T. HAM.

LANTERN.

(No Model.)

No. 433,564. Patented Aug. 5-, 1890.

(No Model.) 2 Sheets-Sheet 2.

O. T. HAM.

LANTERN.

No. 433,564. Patented Aug. 5, 189.0.

M4212? e ifilllll IIIIN W 294 WC 7121 K UNITED STATES PATENT OFFICE.

CHARLES T. HAM, OF ROCHESTER, NEW YORK.

LANTERN.

SPECIFICATION forming part of Letters Patent No. 433,564, dated August 5, 1890.

Application filed March 16, 1888. Serial No. 267,376. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES T. HAM, of

Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Lanterns; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the drawings accompanying this application.

. My improvement relates to that class of tubular lanterns which are provided with a clamp and adapted to be attached to the dashboard of a carriage.

The invention consists in the combination, with the lantern, of a reflector of peculiar form, adapted to throw the light outward and downward in advance, and a spring-clamp attached to the back of the reflector by which the lantern can be hung to the dash-board, as hereinafter more fully described.

In the drawings, Figure l is a front elevation of the lantern. Fig. 2 is a side elevation at right angles to Fig. 1, a portion being shown in vertical section. Fig. 3 is a crosssection in line 0000 of Fig. 1, looking downward. Fig. 4c is a rear elevation of the reflector. 4

A indicates the oil-pot; B, the air-chamber; .T J, the side tubes; 0, the globe or chimney; D, the cap, and E the clamping-ring, all being of ordinary and well-known construction.

My improvement is as follows: G is a reflector made of tin and attached permanently to the back of the lantern, covering the space between the two side tubes. This reflector is carried out in a horizontal length a from the top of the oil-pot, being soldered orotherwise attached to the oil-pot, so as to close the space at the bottom of the reflector. Then it is carried up in a vertical length I), and then is curved at the top, as shown at c, the inner ends being soldered or otherwise attached to the back of the side tubes. It presents a broad side at the back of the globe, which covers the whole area between the side tubes, the back being substantially vertical and the top concave, by which means the light will be reflected both forward and downward. The top of the reflector, at a distance back from the top of the globe, is cut out in concave form and concentric with the top of the globe, leaving thereby an open space (1 all around the top of the globe for the circulation of air and to prevent obstruction of the draft from the globe upward, so that the passage shall be as unobstructed on the back as on the front side, and also so that the currents of air shall have free passage transversely between the..globe and cap in whatever direction they may come. The upper corners ff simply of the reflector are attached to the side tubes, leaving the whole top of.

the reflector open. These upper corners come about on a horizontal line with the top of the globe by which means the reflector simply lies behind the globe, and the whole top above the globe is unobstructed.

The reflector is struck up or formed with a central concave g, that comes opposite the blaze, and a series of concentric rings h h, which in crosssection are V-shaped, as shown in the sectional view, Fig. 2. The concave reflects the lightforward in convergent rays, while the rings, by presenting different angles, reflect it in all directions, both upward and downward. The result is that the light is spread over a great surface, and the road can be seen not only in advance, but also at the sides. The grooves being in circular rings and being of V shape, the light at topand bottom will be reflected forward in the line of travel, while at the sides it will be reflected laterally or to the right and left of the line of travel, thus illuminating a greateXtent of surface and more effectively than if the lines were arranged vertically, horizontally, or in any other direction than in a circle.

H is a spring-clamp attached at its top to the back of the reflector and being free at its lower end, by which means it can be inserted over the top of a clash-board I and be held thereto by its own elasticity.

K is a loop attached to the back of the reflector for the purpose of hanging it on a nail or other support when not in use.

Tubular lanterns adapted to be attached to dash-boards are not broadly of my invention, as such have been provided with reflectors having spring clamps at their rear prior to my improvement. It is of special importance that the lantern or lantern-frame intended for use on the dash-board of a vehicle be made as firm as practicable, for the reason that it willbe subjected to exceptional strains from the rapid and abrupt movements of the same, and, further, it is highly desirable that the rearward passage of light between the tubes be prevented. Both of these results are obtained by extending the reflector to the tubes and connecting it directly with them, the structure being further braced by connecting the reflector firmly to the lamp-pot.

I am aware that a reflector has been applied to the tubes of a lantern by means of hooks sliding upon said tubes and held down thereon by a hinged bail, said reflector having springs for attachment to a dash-board,'

but not directly connected to the lamp-pot, and devices of thischaracter are notbroadly claimed herein.

Having described my invention, What I claim as new, and desire to secure by'Letters Patent,-is-

In combination with a tubular lantern, a reflector provided with a spring-clamp on its back and immovably secured at its bottom to the top of the lamp-pot, and having its upper corners secured directly rigidly to the lanterntubes near the top of the globe, said reflector extending laterally beyond the inne r face of the tubes and covering the entire space between them to cut off light at the rear, the lamp-pot, tubes, and reflector being secured together and firmly held independent of the globe, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing Witnesses.

CHARLES T. HAM.

Witnesses:

R. F. OSGOOD, JAcoB SPAHN. 

